CN201812908U - Low-pass filter of integrated directional coupling structure - Google Patents
Low-pass filter of integrated directional coupling structure Download PDFInfo
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- CN201812908U CN201812908U CN 201020546792 CN201020546792U CN201812908U CN 201812908 U CN201812908 U CN 201812908U CN 201020546792 CN201020546792 CN 201020546792 CN 201020546792 U CN201020546792 U CN 201020546792U CN 201812908 U CN201812908 U CN 201812908U
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- 230000008878 coupling Effects 0.000 title claims abstract description 21
- 238000010168 coupling process Methods 0.000 title claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 21
- 238000009413 insulation Methods 0.000 claims description 10
- 230000010354 integration Effects 0.000 claims description 7
- 239000004020 conductor Substances 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
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Abstract
The utility model discloses a low-pass filter of an integrated directional coupling structure. The low-pass filter comprises a metal cavity and a low-pass inner conductor arranged in the metal cavity, wherein the rear end of the low-pass inner conductor is provided with a high-resistance section, and a micro-strip coupling plate is arranged above the high-resistance section. The micro-strip coupling plate is arranged above the corresponding metal cavity of the low-pass inner conductor, and a directional coupler and the low-pass filter are combined into a whole without affecting the performance of the both, so the volume of the integrated product is greatly reduced, the internal space utilization rate of equipment is improved, the arrangement space of the cavity filter main body is enlarged, and the integrated product is favorable for improving the performance of the equipment.
Description
Technical field
The utility model relates to radio frequency, the microwave technology in the wireless communication technology field, particularly be a kind of low pass filter of integrating directional coupled structure.
Background technology
Directional coupler is widely used a kind of microwave device in the microwave telecommunication system, and it is mainly used in the work shape of detection system, and microwave signal is carried out power division according to a certain percentage.Fast development along with wireless communication technique, radio spectrum resource growing tension, high-frequency harmonic rejection to the communication base station duplexer is had higher requirement, common way is to adopt low pass filter to remove radio-frequency component unnecessary in the signal at present, reduce sample frequency, avoid frequency aliasing, remove High-frequency Interference.
In order to realize detection and inhibition high-frequency harmonic to microwave telecommunication system, present duplexer all needs integrated directional coupler and low pass filter, usually the design that adopts as shown in Figure 1, directional coupler is installed in the antenna opening (ANT) of duplexer, and low-pass filter stage is associated in the rear end of directional coupler.Its concrete structure as shown in Figure 2, insulation low pass cover 102 is installed in the metallic cavity 101, low pass inner wire 103 is installed in the insulation low pass cover 102, and the rear end of low pass inner wire 103 is connected with coupling mobile jib 104, and the top of coupling mobile jib 104 is provided with coupling fluting 106 and microstrip coupled plate 105.This compound mode of arranging is lower to the utilization ratio in space, is unfavorable for the miniaturization of duplexer and with the raising of performance under the volume.
Summary of the invention
For addressing the above problem, the purpose of this utility model is to provide a kind of low pass filter of integrating directional coupled structure, by directional couple and low pass filter are carried out the structure integration, improves product space utilance and equipment performance.
For achieving the above object, the utility model is mainly by the following technical solutions:
A kind of low pass filter of integrating directional coupled structure, comprise metallic cavity (201), be installed in the low pass inner wire (203) in this metallic cavity (201), described low pass inner wire (203) rear end is high impedance section (204), and this high impedance section (204) top is equipped with microstrip coupled plate (205).
Insulation low pass cover (202) is installed in the wherein said metallic cavity (201), and low pass inner wire (203) is fixedly mounted in this insulation low pass cover (202).
Be provided with at least one coupling fluting (206) in the metallic cavity (201) of wherein said high impedance section (204) top.
Wherein the described coupling fluting of institute (206) upper end is connected with above-mentioned microstrip coupled plate (205).
The utility model is arranged on microstrip coupled plate the metallic cavity top of low pass inner wire correspondence, under the situation that does not influence the two performance, directional coupler, low pass filter are united two into one, small product size after the integration is dwindled greatly, improved the space availability ratio of device interior, increase the space of arranging of cavity body filter main body, helped improving the performance of equipment.
Description of drawings
Fig. 1 is the syndeton schematic diagram of existing directional coupler, low pass filter and duplexer.
Fig. 2 is existing directional coupler, low pass filter and duplexer positional structure cutaway view.
Fig. 3 is the syndeton schematic diagram of the utility model directional coupler, low pass filter and duplexer.
Fig. 4 is the utility model directional coupler, low pass filter and duplexer positional structure cutaway view.
Identifier declaration among the figure: metallic cavity 101, insulation low pass cover 102, low pass inner wire 103, coupling mobile jib 104, microstrip coupled plate 105, coupling fluting 106, metallic cavity 201, insulation low pass cover 202, low pass inner wire 203, high impedance section 204, microstrip coupled plate 205, coupling fluting 206.
Embodiment
Core concept of the present utility model is: the utility model low pass inner wire is installed in metallic cavity inside, and microstrip coupled plate and coupling fluting are arranged on the top of the metallic cavity of low pass inner wire correspondence, under the situation that does not influence the two performance, directional coupler, low pass filter are united two into one, reduce taking up room of product, realized the miniaturization of equipment.
For setting forth thought of the present utility model and purpose, the utility model is described further below in conjunction with the drawings and specific embodiments.
See also Fig. 3, shown in Figure 4, the utility model provides a kind of low pass filter of integrating directional coupled structure, and the low pass filter of described integration directional coupled structure mainly is made of metallic cavity 201, insulation low pass cover 202, low pass inner wire 203, high impedance section 204, microstrip coupled plate 205 and coupling fluting 206.
The metallic cavity 201 of its middle front part, low pass inner wire 203 and insulation low pass cover 202 are formed low pass filter and are carried out filtering; The rear end of low pass inner wire 203 is a high impedance section 204, and microstrip coupled plate 205 is placed the top of low pass inner wire 203 high impedance sections 204, is coupled with microstrip coupled plate 205 by coupling fluting 206.
The utility model utilizes the high impedance section 204 of low pass inner wire 203 to replace former coupling mobile jib, because coupling fluting 206 is positioned at the high impedance section top of low pass inner wire 203, so coupled structure pair does not have influence substantially with the low-pass filtering performance.Size by adjusting coupling fluting 206 and microstrip coupled plate 205 can conveniently be regulated the size of coupling amount to the distance of low pass inner wire 203.
The low pass filter of the integration directional coupled structure that the utility model proposes unites two into one low pass filter and directional coupler, and its volume greatly reduces than traditional structure, helps improving the space utilization of equipment and the miniaturization of the equipment of realization.
More than be that a kind of low pass filter of integrating directional coupled structure provided by the utility model is described in detail, used specific case herein structural principle of the present utility model and execution mode are set forth, above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (4)
1. low pass filter of integrating directional coupled structure, comprise metallic cavity (201), be installed in the low pass inner wire (203) in this metallic cavity (201), it is characterized in that described low pass inner wire (203) rear end is high impedance section (204), this high impedance section (204) top is equipped with microstrip coupled plate (205).
2. the low pass filter of integration directional coupled structure according to claim 1 is characterized in that being equipped with in the described metallic cavity (201) insulation low pass cover (202), and low pass inner wire (203) is fixedly mounted in this insulation low pass cover (202).
3. the low pass filter of integration directional coupled structure according to claim 1 is characterized in that being provided with at least one coupling fluting (206) in the metallic cavity (201) of described high impedance section (204) top.
4. the low pass filter of integration directional coupled structure according to claim 3 is characterized in that described coupling fluting (206) upper end is connected with above-mentioned microstrip coupled plate (205).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020546792 CN201812908U (en) | 2010-09-26 | 2010-09-26 | Low-pass filter of integrated directional coupling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020546792 CN201812908U (en) | 2010-09-26 | 2010-09-26 | Low-pass filter of integrated directional coupling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812908U true CN201812908U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201020546792 Expired - Fee Related CN201812908U (en) | 2010-09-26 | 2010-09-26 | Low-pass filter of integrated directional coupling structure |
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| CN (1) | CN201812908U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354887A (en) * | 2011-08-15 | 2012-02-15 | 京信通信系统（中国）有限公司 | Radio frequency adapter |
| CN113986810A (en) * | 2021-12-27 | 2022-01-28 | 深圳贝特莱电子科技股份有限公司 | System and method for improving I2C communication performance |
-
2010
- 2010-09-26 CN CN 201020546792 patent/CN201812908U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354887A (en) * | 2011-08-15 | 2012-02-15 | 京信通信系统（中国）有限公司 | Radio frequency adapter |
| CN102354887B (en) * | 2011-08-15 | 2013-10-16 | 京信通信系统（中国）有限公司 | Radio frequency adapter |
| CN113986810A (en) * | 2021-12-27 | 2022-01-28 | 深圳贝特莱电子科技股份有限公司 | System and method for improving I2C communication performance |
| CN113986810B (en) * | 2021-12-27 | 2022-03-11 | 深圳贝特莱电子科技股份有限公司 | System and method for improving I2C communication performance |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20150926 |
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| EXPY | Termination of patent right or utility model |